Illinois Workers' Comp Calculator
Estimate your Illinois temporary total disability (TTD) workers' compensation benefit using the actual statutory percentage from 820 ILCS 305/8(b).
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Adjust values to see instant results
Estimated Weekly Benefit
$533.33
Estimated • Based on your inputs
Estimated Monthly Benefit
$2,311.11
Detailed Breakdown
Disclaimer: This calculator provides estimates for informational purposes only. Results should not be considered financial, tax, or legal advice. Consult a qualified professional for your specific situation.
How This Calculator Works
Calculation methodology and assumptions
This calculator estimates Illinois's Temporary Total Disability (TTD) workers' compensation benefit -- the ongoing wage-replacement payment made while you are completely unable to work due to a job injury -- using 66 2/3% (two-thirds) of your average weekly wage, per 820 ILCS 305/8(b). Illinois follows the standard nationwide formula: two-thirds (66 2/3%) of your average weekly wage. Your actual benefit is also subject to 133 1/3% of Illinois's state average weekly wage in covered industries, republished by the Illinois Workers' Compensation Commission every January 15 and July 15, on the high end, and 66 2/3% of the higher of the federal or Illinois minimum wage times 40 hours (with a 10-percentage-point-per-dependent increase to this specific minimum-wage floor calculation, capped at 100%) -- not a fixed dollar figure, so not hardcoded here, on the low end -- both change periodically, so this calculator shows the uncapped percentage-of-wage amount, and you should confirm the current published cap/floor with Illinois's workers' compensation agency before relying on this estimate for a specific dollar figure.
Key State Information
820 ILCS 305/8(b): "The compensation rate for temporary total incapacity under this paragraph (b) of this Section shall be equal to 66 2/3% of the employee's average weekly wage computed in accordance with Section 10... The maximum weekly compensation rate... shall be [tied to] 133-1/3% of the State's average weekly wage in covered industries under the Unemployment Insurance Act." (820 ILCS 305/8(b)(1), (b)(4))
How to Use This Workers' Comp Calculator
- 1
Enter your information
Input the required values. The calculator is pre-filled with Illinois's data where applicable — adjust to match your specific situation for accurate results.
- 2
Review default values
Check that the pre-filled state-specific data (tax rates, median values, etc.) matches your local situation. You can override any value to customize the calculation.
- 3
Analyze your results
Review the calculated outputs. Use the breakdown table to understand exactly how each factor contributes to the final result.
- 4
Compare across states
Use the related state calculators linked below to compare results across different states — useful for relocation planning and financial comparison.
Example Calculation
Here's a practical example using Illinois's data.
The calculator uses state-specific public data and documented estimates where available — including tax rates, median values, and cost benchmarks — to produce a personalized estimate for the inputs you provide.
Result: Results will vary based on your individual inputs. Use this calculator as a starting point, then adjust the values to test different scenarios. The methodology section below explains exactly how each result is calculated.
What Affects Your Results
State-Specific Inputs
Illinois has unique rates, fee schedules, and regulatory requirements that can affect results. This page's methodology and source card identify which inputs are sourced, modeled, or user-adjustable.
Income Level
Many calculations are income-dependent due to progressive tax brackets, phase-outs, or income-based eligibility thresholds. Higher income doesn't always mean proportionally higher costs.
Local Variations
State averages may not reflect your specific city or county. Local taxes, fees, and market conditions can vary ±20% from state averages.
Annual Changes
Tax rates, fee schedules, and regulations change. Check the recorded source-review date and verify critical numbers with the relevant agency.
Tips for Illinois Residents
- Always verify pre-filled values against your actual data. State averages are a good starting point but your situation may differ significantly.
- Run multiple scenarios by adjusting key inputs to see how changes affect your results. This helps with planning and decision-making.
- Compare your results across states using the related calculators linked below — especially valuable if you're considering relocating or doing business in Illinois.
- Bookmark this page to recalculate periodically as rates change. Check the page source card and review date before relying on a pre-filled value.
- Consult a qualified professional for major financial decisions. These calculators provide estimates based on standard formulas — a CPA or financial advisor can factor in your complete financial picture.
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StateCalc Team
Editorial Team
The StateCalc team builds free financial calculators using data from official government sources including the IRS, U.S. Census Bureau, BLS, and state revenue departments. All formulas are validated by an automated test suite and cross-referenced against published data.
Our editorial standardsFrequently Asked Questions
How is a workers' comp TTD benefit calculated in Illinois?
Illinois pays 66 2/3% (two-thirds) of your average weekly wage while you are temporarily and totally unable to work due to a job-related injury or illness, per 820 ILCS 305/8(b).
Is there a maximum or minimum weekly benefit?
Yes. The benefit is capped at 133 1/3% of Illinois's state average weekly wage in covered industries, republished by the Illinois Workers' Compensation Commission every January 15 and July 15, and floored at 66 2/3% of the higher of the federal or Illinois minimum wage times 40 hours (with a 10-percentage-point-per-dependent increase to this specific minimum-wage floor calculation, capped at 100%) -- not a fixed dollar figure, so not hardcoded here. Because these figures are typically tied to a state average weekly wage that is republished annually, check with Illinois's workers' compensation agency for the current dollar amount rather than relying solely on this calculator's uncapped estimate.
Does this calculator estimate my lump-sum settlement amount?
No. This tool estimates only your ongoing weekly wage-replacement (TTD) benefit while you remain temporarily and totally disabled. A lump-sum workers' comp settlement additionally depends on your permanent impairment rating, future medical costs, vocational/return-to-work factors, and case-specific negotiation between you (or your attorney) and the insurer -- none of which a wage-replacement calculator can responsibly estimate.
What counts as my "average weekly wage" in Illinois?
Most states calculate this from your gross wages (before taxes) over a set look-back period before your injury -- commonly 13 weeks, though some states use up to a full year for seasonal or part-year workers. Check with your state's workers' comp agency for the exact look-back period that applies to your claim.
Are workers' comp benefits taxable?
No. Workers' compensation benefits paid under a workers' comp act are generally fully exempt from federal and state income tax, per IRC §104(a)(1) -- unlike a lawsuit settlement for lost wages, which is typically taxable. See our Legal Settlement Tax Calculator if you're dealing with a separate personal injury lawsuit rather than a standard workers' comp claim.
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